Planetary mills are able to convert sand particles into smaller particles, mainly silty ones. The longer the milling, the smaller the particles. When adding some (preferably destilled) water, even clay-like particles sizes.

Since silt and clay are ideal layers to store and dam nutrients and water, deserts sand along with desalinated seawater seem to be ideal combination to create an artificial but fertile base for living in currently one of nature's most life-hostile environments.

Besides, converting sand into silt comes along with another one benefit which is reducing the volume of desert sands while increasing its density, and hence, stability. Accordingly, milling desert sands could reduce its mobility and thus the burial of houses and premises of residents by shifting sand dunes.